private void stepInto(Node node, double x, double y, double r_min, double r_max, Collection<T> values) { double minDistance = node.bounds.calcDistance(x, y); double maxDistance = node.bounds.calcMaxDistance(x, y); if(minDistance <= r_max && maxDistance >= r_min) { node.get(x, y, r_min, r_max, values); } }